Thermal fracture of zirconia-mullite composite thermal barrier coatings under thermal shock: A numerical study

被引：38
|
作者：
Gilbert, Anna [1 ]
Kokini, Klod [1 ]
Sankarasubramanian, Santosh [1 ]
机构：
[1] Purdue Univ, W Lafayette, IN 47907 USA
来源：
SURFACE & COATINGS TECHNOLOGY | 2008年 / 203卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
Thermal barrier coatings; Zirconia; Mullite; Thermal shock; Composites;
D O I：
10.1016/j.surfcoat.2008.08.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Thermal barrier coatings (TBCs) are used in many high temperature applications to allow components to sustain high temperatures and severe temperature gradients while improving performance. However, TBCs have a limited life due to crack nucleation and propagation, which leads to coating delamination and loss of thermal protection. Thermally activated time-dependent behavior of the coating is a major cause of surface and interface fracture in thick TBCs. This study investigates the reduction of time-de pendent deformation through the addition of mullite to YSZ based TBCs. Fracture mechanics analyses were performed for three coating architectures: monolithic YSZ, monolithic mullite and a mullite-YSZ composite. The effect of coating architecture and surface crack morphology on interface fracture was investigated. It was found that mullite and YSZ combined to influence the thermal shock behavior of the composite coatings which experienced a reduced driving force for interface fracture compared to monolithic YSZ coatings while having a higher thermal resistance compared to monolithic mullite coatings. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：91 / 98
页数：8
相关论文
共 50 条
  • [21] Study of microstructure and thermal shock behavior of two types of thermal barrier coatings
    Saeedi, B.
    Sabour, A.
    Khoddami, A. M.
    MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2009, 60 (09): : 695 - 703
  • [22] Estimating the fracture resistance of functionally graded thermal barrier coatings from thermal shock tests
    Rangaraj, S
    Kokini, K
    SURFACE & COATINGS TECHNOLOGY, 2003, 173 (2-3): : 201 - 212
  • [23] Residual stress evolution regularity in thermal barrier coatings under thermal shock loading
    Chen, Ximin
    Liu, Zhanwei
    Yang, Yang
    THEORETICAL AND APPLIED MECHANICS LETTERS, 2014, 4 (02) : 021009
  • [24] Residual stress evolution regularity in thermal barrier coatings under thermal shock loading
    Ximin Chen
    Zhanwei Liu
    Yang Yang
    Theoretical & Applied Mechanics Letters, 2014, 4 (02) : 58 - 64
  • [25] Effect of gas pressure on thermal conductivity of zirconia thermal barrier coatings
    Mogro-Campero, A
    Johnson, CA
    Bednarczyk, PJ
    Dinwiddie, RB
    Wang, H
    SURFACE & COATINGS TECHNOLOGY, 1997, 94-5 (1-3): : 102 - 105
  • [26] Effect of gas pressure on thermal conductivity of zirconia thermal barrier coatings
    GE Research and Development Cent, Niskayuna, United States
    Surf Coat Technol, 1-3 (102-105):
  • [27] Recent developments in zirconia thermal barrier coatings
    Tian, YS
    Chen, CZ
    Wang, DY
    Ji, QM
    SURFACE REVIEW AND LETTERS, 2005, 12 (03) : 369 - 378
  • [28] Surface modification of zirconia thermal barrier coatings
    Berezin, I
    Troczynski, T
    JOURNAL OF MATERIALS SCIENCE LETTERS, 1996, 15 (03) : 214 - 218
  • [29] Thermal shock of functionally graded thermal barrier coatings with similar thermal resistance
    Kokini, K
    DeJonge, J
    Rangaraj, S
    Beardsley, B
    SURFACE & COATINGS TECHNOLOGY, 2002, 154 (2-3): : 223 - 231
  • [30] Comparison of Oxidation and Thermal Shock Performance of Thermal Barrier Coatings
    Karaoglanli, Abdullah Cahit
    Turk, Ahmet
    Ozdemir, Ismail
    Ustel, Fatih
    MATERIALS AND MANUFACTURING PROCESSES, 2015, 30 (06) : 717 - 723
12345